May weather forecast
Llewellyn Corners, PA

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Weather in May

The last month of the spring, May, is a comfortable month in Llewellyn Corners, Pennsylvania, with an average temperature fluctuating between 48°F (8.9°C) and 67.6°F (19.8°C).

Temperature

With the onset of May, Llewellyn Corners's average high-temperature sees a rise, moving from April's 55.4°F (13°C) to a still refreshing 67.6°F (19.8°C). In Llewellyn Corners, May's nights observe an average temperature dip to a chilly 48°F (8.9°C).

Humidity

The average relative humidity in May is 79%.

Rainfall

In Llewellyn Corners, in May, it is raining for 15.4 days, with typically 1.18" (30mm) of accumulated precipitation. Throughout the year, there are 142.7 rainfall days, and 13.19" (335mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Llewellyn Corners aggregates 0.04" (1mm) of snow. In Llewellyn Corners, during the entire year, snow falls for 49.9 days and aggregates up to 9.92" (252mm) of snow.

Daylight

In Llewellyn Corners, the average length of the day in May is 14h and 31min.
On the first day of the month, sunrise is at 5:59 am and sunset at 8:00 pm. On the last day of May, sunrise is at 5:32 am and sunset at 8:29 pm EDT.

Sunshine

In May, the average sunshine is 8.1h.

UV index

The months with the highest UV index in Llewellyn Corners are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: In May, a daily UV index of 5 turns into the following recommendations:
Be vigilant - Preventing sunburn is recommended. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

In May, in Llewellyn Corners, the average high-temperature is 67.6°F (19.8°C), and the average low-temperature is 48°F (8.9°C).

What is the average humidity in May in Llewellyn Corners?

In May, the average relative humidity is 79%.

How much does it rain in May?

In May, the rain falls for 15.4 days. Throughout May, 1.18" (30mm) of precipitation is accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.2 snowfall days, in May, Llewellyn Corners aggregates 0.04" (1mm) of snow.

What is the average length of the day in May?

The average day length in May is 14h and 31min.

When are sunrise and sunset in May?

On the first day of May, sunrise is at 5:59 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 8:29 pm EDT.

How many hours of sunshine does Llewellyn Corners have in May?

In Llewellyn Corners, the average sunshine duration in May is 8.1h.

When is the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 5.

What is the UV index intensity in May?

In Llewellyn Corners, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Llewellyn Corners, PA

Average temperature in May - Llewellyn Corners, PA
  • Average high temperature in May: 67.6°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in May: 48°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

Average pressure in May
Llewellyn Corners, PA

Average pressure in May - Llewellyn Corners, PA
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in May
Llewellyn Corners, PA

Average wind speed in May - Llewellyn Corners, PA
  • Average wind speed in May: 6.5mph

The windiest months (with the highest average wind speed) are March and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in May
Llewellyn Corners, PA

Average humidity in May - Llewellyn Corners, PA
  • Average humidity in May: 79%

The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is April (77%).

Average rainfall in May
Llewellyn Corners, PA

Average rainfall in May - Llewellyn Corners, PA
  • Average rainfall in May: 1.18"

The wettest month (with the highest rainfall) is July (1.5").
The driest month (with the least rainfall) is September (0.71").

Average rainfall days in May
Llewellyn Corners, PA

Average rainfall days in May - Llewellyn Corners, PA
  • Average rainfall days in May: 15.4 days

The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in May
Llewellyn Corners, PA

Average snowfall in May - Llewellyn Corners, PA
  • Average snowfall in May: 0.04"

The month with the highest snowfall is February (2.83").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Llewellyn Corners, PA

Average snowfall days in May - Llewellyn Corners, PA
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Llewellyn Corners, PA

Average daylight in May / Average sunshine in May - Llewellyn Corners, PA
  • Average daylight in May: 14h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in May: 8h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 3h and 42min).

Average sunshine days in May
Llewellyn Corners, PA

Average sunshine days in May - Llewellyn Corners, PA
  • Average sunshine days in May: 13.2 days

The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is February (11.6 days).

Average UV index in May
Llewellyn Corners, PA

Average UV index in May - Llewellyn Corners, PA
  • Average UV index in May: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in May
Llewellyn Corners, PA

Average cloud cover in May - Llewellyn Corners, PA
  • Average cloud cover in May: 50

The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 36).

Average visibility in May
Llewellyn Corners, PA

Average visibility in May - Llewellyn Corners, PA
  • Average visibility in May: 5mi

The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).

Llewellyn Corners, Pennsylvania, USA

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